I don't usually like redoing quests in general, which is why I support having multiple jobs in one character. Every time I create another character since Stormblood, I would use the MSQ potion since I've read and watched and done everything on my first playthrough (and continue to read, watch, and do everything on present and future playthrough).

So, NG+ was never really something I would use regardless. That said, with the upcoming change in 5.3, I may use it just to see how they change ARR.